中国激光, 2017, 44 (10): 1003001, 网络出版: 2017-10-18
激光激发Ce∶YAG单晶与陶瓷的发光性能 
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Luminescence Properties of Ce∶YAG Single Crystals and Ceramics Under Laser Excitation
图 & 表
图 1. 不同Ce3+掺杂浓度的陶瓷和单晶样品(厚度为1 mm)
Fig. 1. Ceramic and single crystal samples of with different doping concentrations of Ce3+ ( thickness is 1 mm)
图 2. 当Ce3+摩尔分数为0.5%时,Ce∶YAG (a)单晶粉末和(b)陶瓷片的XRD谱
Fig. 2. XRD patterns of Ce∶YAG (a) single crystal powder and (b) ceramic chip when mole fraction of Ce3+ is 0.5%
图 3. 不同Ce3+掺杂浓度下的陶瓷和单晶的吸收光谱
Fig. 3. Absorption spectra of ceramic and single crystal under different Ce3+ doping concentrations
图 4. 样品Cer2和Cry2的荧光激发光谱和发射光谱
Fig. 4. Fluorescence excitation and emission spectra of Cer2 and Cry2 samples
图 5. 所示为激光输出光功率与注入电流的关系,可以看出,当注入电流小于阈值电流时,光功率基本为零。当注入电流超过阈值电流且小于1 A时,激光输出光功率和注入电流近似呈线性变化;而当注入电流继续增大时,光功率不再呈线性变化,这是由于激光源本身发热多,而散热装置未能及时散热,导致激光的光功率下降[17]。实验测得的最大光功率为2.61 W。
Fig. 5.
图 6. (a)陶瓷和(b)单晶在激光激发下的光通量和光电效率与电流的关系
Fig. 6. Luminous flux and photoelectric efficiency of (a) ceramic and (b) single crystal under laser excitation versus current
图 8. 1 mm厚的陶瓷和单晶在激光激发下的显色指数与电流的关系
Fig. 8. Color rendering index versus current for ceramic and single crystal with 1 mm thickness under laser excitation
表 1样品在激光激发下的光通量
Table1. Luminous flux of samples under laser excitation
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表 2激光激发下的陶瓷(Ce3+摩尔分数为0.3%)和单晶(Ce3+摩尔分数为1.5%)的光-光转换效率
Table2. Optical-to-optical conversion efficiencies of ceramic with Ce3+ mole fraction of 0.3% and single crystal with Ce3+ mole fraction of 1.5% under laser excitation
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靳亚硕, 郭向朝, 曹顿华, 章汉梁, 张国栋, 李海兵. 激光激发Ce∶YAG单晶与陶瓷的发光性能[J]. 中国激光, 2017, 44(10): 1003001. Jin Yashuo, Guo Xiangchao, Cao Dunhua, Zhang Hanliang, Zhang Guodong, Li Haibing. Luminescence Properties of Ce∶YAG Single Crystals and Ceramics Under Laser Excitation[J]. Chinese Journal of Lasers, 2017, 44(10): 1003001.
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